I use one and its Velcro of course. I personally like it because its easier to get to when digging sometimes it slides off but has never broken because I'm always on grass. One less thing on my hip. Its not too heavy for me.

Yep, that pointer would get lost for sure if you didn't tether it to the shaft. I looked at one but decided against it because I spend as much time crawling through the woods as I do in a park and it would get knocked loose constantly. I use the White's deluxe pouch that has a great side pocket for the pin pointer and I use a fly fishing coiled lanyard to tether it. Works great.

You will feel extra weight depending on where you mount it. The X-1 probe adds some weight,I carry the probe itself in my pocket to get RID of the weight. It’s not terrible though,I’d imagine a normal pinpointer would weigh about the same.